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Submitted on 2020-05-11
Dynamic prominences were visible at the solar limb from 8 till 10 May.
Submitted on 2020-05-05
The last days of April, the Sun was adorned by four small sunspot groups. Three of them belonged to the new solar cycle 25.
Submitted on 2020-04-28
On 20 April, a minor geomagnetic storm ensued following the impact of a slow but potent interplanetary CME. Due to the lack of an obvious on-disk source, the weak nature of the CME, and data gaps in coronagraphic imagery, both the impact and its strength came as a surprize to space weather forcasters.
Submitted on 2020-04-21
A compact eruption near the northern polar coronal hole took place on 13 April. It was associated with a fast and narrow coronal mass ejection.
Submitted on 2020-04-15
Your favorite antidote against the corona boredom has arrived! Counting sunspots had already been turned into a citizen science project "Val-u-Sun" last year, but is now also available in Nederlands and en Français!
Submitted on 2020-04-08
NOAA 2759 was a small sunspot group from the new solar cycle 25. Using the JHelioviewer software, some movies were created showing the 5 B-class flares that it has produced during its transit so far.
Submitted on 2020-03-31
Staying with the buzzword of our times, the word "corona" is being used very often in astronomy too. An overview.
Submitted on 2020-03-26
A compilation of the most memorable space weather moments of 2019, featuring data, links and movies.
Submitted on 2020-03-17
Based on the location and number of high-latitude sunspot groups, as well as the current level of sunspot numbers, a solar cycle minimum between September 2019 and February 2020 seems very likely.
Submitted on 2020-03-12
The now spotless active region NOAA 2758 produced a B-class flare on 11 March. The region belongs to the new solar cycle 25.
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